C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Removing engine with bellhousing attached

Thread Tools
 
Search this Thread
 
Old Nov 4, 2024 | 10:00 PM
  #1  
Gasnmyveins's Avatar
Gasnmyveins
Thread Starter
Pro
Veteran: Army
 
Joined: Aug 2021
Posts: 503
Likes: 33
From: S Fla
Default Removing engine with bellhousing attached

I've got everything disconnected and I'm ready to pull the engine. I've got the cherry picker coming in from the driver side. It doesn't lift high enough for the top part of the engine mount to clear the bottom part of the engine mount. I have the trans supported with my floor jack and wood. Do I have to remove the top parts of the engine mounts to do this? And then, how do I get the engine and bellhousing to come free of the trans?
Thanks in advance for any advice you can offer.
Reply
Old Nov 5, 2024 | 01:59 PM
  #2  
jv9999's Avatar
jv9999
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2014
Posts: 2,184
Likes: 381
From: Lunenburg MA
Default

I had to remove the mounts to pull mine with the trans connected.
Reply
Old Nov 5, 2024 | 03:21 PM
  #3  
Gasnmyveins's Avatar
Gasnmyveins
Thread Starter
Pro
Veteran: Army
 
Joined: Aug 2021
Posts: 503
Likes: 33
From: S Fla
Default

Originally Posted by jv9999
I had to remove the mounts to pull mine with the trans connected.
The ones attached to the engine, or the frame?
Reply
Old Nov 5, 2024 | 03:51 PM
  #4  
jv9999's Avatar
jv9999
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2014
Posts: 2,184
Likes: 381
From: Lunenburg MA
Default

Both. I had to remove them completely to get the clearance.
Reply
Old Nov 5, 2024 | 04:06 PM
  #5  
ChumpVette's Avatar
ChumpVette
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2010
Posts: 4,564
Likes: 1,676
Default

Remove the bellhousing and the clutch before removing the engine. At that point you come up with the engine and then move forward a bit then straight out.
Reply
Old Nov 5, 2024 | 04:07 PM
  #6  
ChumpVette's Avatar
ChumpVette
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2010
Posts: 4,564
Likes: 1,676
Default

You are working on a manual?
Reply
Old Nov 5, 2024 | 05:39 PM
  #7  
Gasnmyveins's Avatar
Gasnmyveins
Thread Starter
Pro
Veteran: Army
 
Joined: Aug 2021
Posts: 503
Likes: 33
From: S Fla
Default

Originally Posted by jv9999
Both. I had to remove them completely to get the clearance.

Wonderful. I tried to take the one off of the engine and the third bolt wouldn't come out. I'll try going under the car tonight. Do I remove the one that is attached to the frame from below the car as well?
Reply
Old Nov 5, 2024 | 05:48 PM
  #8  
Gasnmyveins's Avatar
Gasnmyveins
Thread Starter
Pro
Veteran: Army
 
Joined: Aug 2021
Posts: 503
Likes: 33
From: S Fla
Default

Yes, it's a manual. I'm trying to avoid pulling the trans. I've read that I can unbolt the bellhousing from the trans and pull it out with the engine. It sounds like a much easier way to check the clutch and flywheel, plus I don't have to manhandle that heavy ZF while I'm at it.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Nov 5, 2024 | 05:59 PM
  #9  
ChumpVette's Avatar
ChumpVette
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2010
Posts: 4,564
Likes: 1,676
Default

Originally Posted by Gasnmyveins
Yes, it's a manual. I'm trying to avoid pulling the trans.
How is that working out for you? You are struggling now, just wait till you are trying to get the input shaft from the trans aligned on install.

Originally Posted by Gasnmyveins
I've read that I can unbolt the bellhousing from the trans and pull it out with the engine.
I'd be interested in seeing who said that bit of info.

Originally Posted by Gasnmyveins
It sounds like a much easier way to check the clutch and flywheel, plus I don't have to manhandle that heavy ZF while I'm at it.
Manhandle? Ideally you have a trans jack. At minimum a floor jack. There is no manhandling. It is 60-90 minutes to drop the transmission.


Look at the bonus, you get to check the driveshaft, the u-joints, clean up the ZF at the same time.
Reply
Old Nov 5, 2024 | 10:10 PM
  #10  
VikingTrad3r's Avatar
VikingTrad3r
Oil Producer
Supporting Gold
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2014
Posts: 9,364
Likes: 2,734
Default

Originally Posted by Gasnmyveins
Yes, it's a manual. I'm trying to avoid pulling the trans. I've read that I can unbolt the bellhousing from the trans and pull it out with the engine. It sounds like a much easier way to check the clutch and flywheel, plus I don't have to manhandle that heavy ZF while I'm at it.

You will have to drop the trans.
Reply
Old Nov 6, 2024 | 03:11 AM
  #11  
flannel_man's Avatar
flannel_man
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2002
Posts: 2,263
Likes: 413
From: Muskogee OK
Cruise-In VI Veteran
Default

Originally Posted by Gasnmyveins
I've read that I can unbolt the bellhousing from the trans and pull it out with the engine.
​​​​​​
Originally Posted by ChumpVette
I'd be interested in seeing who said that bit of info.
On a 4+3 I know it's very doable
Mine
Mine

On a ZF6 tho, I have no clue

Reply
Old Nov 6, 2024 | 08:43 AM
  #12  
VikingTrad3r's Avatar
VikingTrad3r
Oil Producer
Supporting Gold
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2014
Posts: 9,364
Likes: 2,734
Default

Originally Posted by flannel_man
​​​​​​


On a 4+3 I know it's very doable
Mine
Mine

On a ZF6 tho, I have no clue
flannel, did you reinstall like that too? the issue i would see almost insurmountable would be is the restabbing of the trans input shaft into that. it might technically be possible but i cant see it.

maybe…just maybe…because the clutch assembly wasn’t disturbed , the alignment would be easy. but then, who is doing this and not replacing rms and inspecting clutch for wear.

ive reinstalled 8 or so trannies and its always the last inch thats an issue. i cannotimagine how this could work but i could be wrong
Reply
Old Nov 6, 2024 | 03:18 PM
  #13  
flannel_man's Avatar
flannel_man
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2002
Posts: 2,263
Likes: 413
From: Muskogee OK
Cruise-In VI Veteran
Default

Viking, actually yes, I did reinstall it that way as well. The clutch had less than 5k miles on it, so I reused it all. Still have the alignment tool hanging on the pegboard next to the one for my F350s ZF6. I was actually expecting it to be a nightmare since about 2 months earlier I had helped my dad replace the hydraulic TO bearing in his F250s ZF5 . That thing fought us for every millimeter for a couple hours and all we did was roll the transmission back to replace the bearing and then roll it forward, nothing changed rotationally for alignment. By comparison the 4+3 somehow magically aligned perfectly and the engine slid right in place

The last inch shouldn't give you any issues. By that point you have your bolts in and everything should be aligned, the only thing to possibly fight you would be the input shaft bearing. Try this if you are stabbing the transmission to the engine, get new bolts of the same thread pitch as the mounting bolts, as long as possible. Then grind the hex head off, just the hex pattern, keep as much length as possible. Then cut a slot in the head end for a flat screwdriver. Boom. Alignment studs. Run them in a couple threads, but don't get them tight, cause you'll be backing them out via screwdriver. Line up the mounting holes to your alignment studs and shove er home till a bolt is long enough to grab and crank it together swapping studs for bolts as possible

Sh
Here's some of the ones I used on
My ZF6 clutch adventure

You can see where the hex head was before they were turned down in the lathe

Last edited by flannel_man; Nov 6, 2024 at 04:19 PM.
Reply
Old Nov 6, 2024 | 08:32 PM
  #14  
IHBD's Avatar
IHBD
Melting Slicks
All Eyes On Me
Shutterbug
Top Answer: 5
Pro Mechanic
 
Joined: Nov 2016
Posts: 2,234
Likes: 3,062
From: So Cal
2023 C4 of the Year Finalist - Unmodified
Default

Originally Posted by flannel_man
till a bolt is long enough to grab and crank it together.........
Excellent way to break a mounting ear off the transmission case. If you're really unlucky, the broken ear will take enough of the case with it that it leaves a hole in the case for oil to leak from. You won't get away with using only 3 bolts.

You've got to be sure the trans will insert until both surfaces are touching each other, before you tighten any bolts.
Reply
Old Nov 7, 2024 | 05:55 PM
  #15  
flannel_man's Avatar
flannel_man
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2002
Posts: 2,263
Likes: 413
From: Muskogee OK
Cruise-In VI Veteran
Default

Then I guess I should reword it as, turn the bolts in a controlled manner to pull the 2 halves together evenly.

I'm not suggesting you use it like a ball joint press, and if the mounting ears are that soft and fragile they wouldn't be able to hold the transmission in place under hard acceleration. If you're down there cranking on it with a 2ft cheater bar and are bound up yeah I could see that happening. Otherwise it's just pulling the 2 halves together in a controlled manner. Just watch the gap between the bell housing and transmission and keep it even vs snugging down just 1 bolt and getting all skewed and bound up
Reply

Get notified of new replies

To Removing engine with bellhousing attached





All times are GMT -4. The time now is 08:38 AM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE